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A member asked:
Ive heard bun is only significant when high. but mine went from an average of 15 for years all the way down to 5. the lab range is 7-25. so something made my bun randomly drop to 5. what could it be? what f/u tests can i ask for? thank you?
2 doctors weighed in across 2 answers
A low protein diet, liver disease, or abnormal overhydration can cause a low BUN. A doctor rarely looks at one lab value and makes a clinical decision. You need to look at all the lab values and the entire clinical picture. Speak to your doctor
Answered 5/9/2022
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All laboratory results need to be interpreted in the clinical context and the doctor who ordered the tests is usually in the best position to do that. Talk to the doctor who ordered the tests. Having said that, a low BUN is usually not a cause for concern. It may reflect a state of overhydration. Wish you good health!
Answered 5/9/2022
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